Milwaukee Lithium-Ion batteries are the next generation in Lithium-Ion technology. Compatible with all products in the M12 Cordless tool system, these Lithium-Ion battery packs will provide unmatched runtime, performance, and durability for the professional tradesman. 1.5 Ah 16-Watt hour’s battery Lithium-ion battery delivers long-life and run time with fade-free power Unmatched runtime, performance and durability for the professional tradesman Includes: two 48-11-2401 M12 Lithium-ion compact batteries